Good Point. Although I do remember reading some type of article about a year or so ago that stated Chinese women are experiencing an alarming rate of lung cancer from working all day in smoky kitchens and around smoky stoves. The article failed to point out that smoking among chinese women has increase something like 10-fold in the last 20 years.
But being a smoker, as opposed to just being occassionally around smoke are 2 entirely different issues and that is the problem with many on this thread. It is mixing apples and oranges.
Does smoking increase a person's risk of certain illnesses? I don't know anyone who would deny it. However, the same can not be said about non-smokers being exposed to the smoke of others.